Control beamwidth and radiation power of antenna system

• Main Author: Олег Олександрович Білобородов
• Format: Article
• Language: English
• Published: National Defence University of Ukraine named after Ivan Cherniakhovsky 2020-05-01
• Series: Sučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni
• Subjects: radio engineering tool; antenna system; radiation pattern; radiation power; power flux density
• Online Access: http://sit.nuou.org.ua/article/view/194424
• ISSN: 2311-7249; 2410-7336

To combat groups of unmanned aerial vehicles, as well as for other tasks, the use of electromagnetic means is effective. When the distance to the group target changes, its angular size changes, therefore, the urgent task is to effectively control the radiation pattern width of the antenna system of the radiating radio equipment and the radiation power. The article describes the basic relationships for ensuring a given radiation power flux density in a given region, taking into account energy absorption in the atmosphere. The results of the analysis of antenna synthesis methods are presented and the main methods for controlling the width of the radiation pattern are substantiated: the use of aperture of variable size, as well as variation of parameters for the parametric amplitude distributions of exciting currents along the antenna aperture. The analysis of the influence of parameters on the spatial and energy parameters of the radiation field of the antennas is carried out. The developed algorithms for varying the parameters and radiation power to provide a given level of impact on the target are presented. The results obtained allow us to justify the requirements for radio equipment of electromagnetic effects (combat unmanned aerial vehicles, enemy control systems, etc.). The results can be used as part of control systems algorithms for special radio equipment.